# Get Miners Weights History

GET /v1/miners/weights/history — Taostats API endpoint in the Miners group.

_Source: https://beta.taostats.io/docs/new/miners/get-miners-weights-history_

_Last reviewed: 2026-10-07_

```http
GET https://api.taostats.io/v1/miners/weights/history
```

Requires an API key in the `Authorization` header.

## Try it

Try this request in the browser on the HTML version of this page, or use the code samples below.

### Code samples

**cURL**

```bash
curl -H "Authorization: <YOUR_API_KEY>" \
  "https://api.taostats.io/v1/miners/weights/history"
```

**JavaScript**

```js
const response = await fetch('https://api.taostats.io/v1/miners/weights/history', {
  headers: {
    Authorization: '<YOUR_API_KEY>',
  },
});
const data = await response.json();
```

**Python**

```python
import requests

response = requests.get(
    "https://api.taostats.io/v1/miners/weights/history",
    headers={"Authorization": "<YOUR_API_KEY>"},
)
data = response.json()
```

## Parameters

| Name | In | Type | Required | Description |
| --- | --- | --- | --- | --- |
| `netuid` | query | `integer (int32)` | Yes | Subnet ID (required). |
| `mechanism` | query | `integer (int32)` |  | Subnet mechanism (0-15). Default: 0, the main mechanism. |
| `miner_uid` | query | `integer (int32)` |  |  |
| `validator_uid` | query | `integer (int32)` |  |  |
| `miner_hotkey` | query | `string` |  |  |
| `validator_hotkey` | query | `string` |  |  |
| `block_number` | query | `integer (int32)` |  |  |
| `block_start` | query | `integer (int32)` |  |  |
| `block_end` | query | `integer (int32)` |  |  |
| `timestamp_start` | query | `integer (int64)` |  |  |
| `timestamp_end` | query | `integer (int64)` |  |  |
| `page` | query | `integer (int32)` |  | Page number (1-indexed). Default: 1. Bounded window: `(page − 1) × limit` must be below 1,000,000. Deep `OFFSET` paging is linear in the offset, so an uncapped `page` lets one request scan tens of millions of rows; a page past the window is rejected with a 400. Reach deeper history with this endpoint's range filters (`block_start`/`block_end`, `timestamp_start`/`timestamp_end`) rather than a larger `page`. |
| `limit` | query | `integer (int32)` |  |  |
| `order_by` | query | `string` |  | Order column: `timestamp` (only). |
| `order_dir` | query | `string` |  | Sort direction. Default: `desc`. One of `asc`, `desc`. |

## Responses

### `200` — Miner weight assignments over time for a subnet

| Field | Type | Required | Description |
| --- | --- | --- | --- |
| `data` | `array` | Yes |  |
| `data[].block_number` | `integer (int32)` | Yes | Block height of the snapshot. |
| `data[].mechanism` | `integer (int32)` | Yes | Subnet mechanism the weight was set on (0 is the main mechanism). |
| `data[].miner_hotkey` | `string` | Yes | Miner hotkey (SS58), or `"unknown"` if the UID has no live neuron. |
| `data[].miner_uid` | `integer (int32)` | Yes | Miner (target) neuron UID. |
| `data[].netuid` | `integer (int32)` | Yes | Subnet ID. |
| `data[].timestamp` | `string` | Yes | ISO 8601 timestamp with millisecond precision. |
| `data[].validator_hotkey` | `string` | Yes | Validator hotkey (SS58). |
| `data[].validator_uid` | `integer (int32)` | Yes | Validator (source) neuron UID. |
| `data[].weight` | `string` | Yes | Weight value (sum-normalised fraction, decimal string). |
| `pagination` | `object` | Yes | Pagination metadata appended to collection responses. `next_page` / `prev_page` are explicitly required+nullable in the OpenAPI spec: per `docs/api_standards.md` we emit `null` rather than omitting the field, so the SDK should model them as `Option`/nullable types that are always present in the response. **`total_items` is the exact number of matching rows** on every route (issue #992). It used to stop at 1,000,000, which reported a million transfers when finney holds 7,513,252 and a million events when the real figure is 981,179,110; the cap was removed on 29 Sep 2026 and nothing may reintroduce one — `crate::pagination::exact_count_sql` is the only count form, and `no_capped_count_reaches_the_api_surface` in `data-debug-scripts` fails the build if a capped one comes back. **`total_pages` is still bounded**, to `crate::pagination::max_reachable_page(per_page)`, because the `page` parameter is capped to a 1,000,000-row window: deep `OFFSET` paging reads every skipped row (24.7M rows / 36.6 GiB / 42 s measured on one endpoint, issue #413). So `total_pages` is exactly the last page this API will serve and `next_page` / `prev_page` stay coherent at the window edge, while `total_items` tells the caller how many rows there really are. History beyond the window is reached with each endpoint's range filters, not a larger `page`. |
| `pagination.current_page` | `integer (int32)` | Yes | 1-indexed page that produced the rows in `data`. |
| `pagination.next_page` | `integer (int32), nullable` | Yes | Next page number, or `null` if this is the last page. |
| `pagination.per_page` | `integer (int32)` | Yes | Number of items requested per page. |
| `pagination.prev_page` | `integer (int32), nullable` | Yes | Previous page number, or `null` if this is the first page. |
| `pagination.total_items` | `integer (int64)` | Yes | Number of items matching the query across all pages. This is the exact count — every matching row, however many there are. It is not bounded by `total_pages`, so a listing can legitimately report far more items than `total_pages × per_page`. |
| `pagination.total_pages` | `integer (int32)` | Yes | Number of pages at the current `per_page` that this API will serve: `ceil(total_items / per_page)`, capped at `ceil(1000000 / per_page)` because the `page` parameter only reaches into the first 1,000,000 rows. When the cap bites, `total_items` is still the true total and this is the last page a request can ask for; reach deeper history with the endpoint's range filters instead of a larger `page`. |

### `400` — Invalid query parameter

| Field | Type | Required | Description |
| --- | --- | --- | --- |
| `message` | `string` | Yes | Plain-english message describing the failure from the caller's perspective. |
| `status_code` | `integer (int32)` | Yes | HTTP status code (mirrored in the response status line for convenience). |

### `500` — Internal server error

| Field | Type | Required | Description |
| --- | --- | --- | --- |
| `message` | `string` | Yes | Plain-english message describing the failure from the caller's perspective. |
| `status_code` | `integer (int32)` | Yes | HTTP status code (mirrored in the response status line for convenience). |

Every request needs an `Authorization` header holding your API key — see [Getting started with the Taostats API](https://beta.taostats.io/docs/start-here/getting-started-with-taostats-api).